Model: 1756-TBCH Terminal base screw type suitable for ControlLogix I/O modules 1756-TBSH Terminal base spring type suitable for ControlLogix I/O modules 1756-TBS Terminal base screw standard type 1756-CPR Rack power connector suitable for ControlLogix 1756-CP3 Programming cable RS-232 suitable for ControlLogix 1756-MM1 The memory module is suitable for ControlLogix processors 1756-MMI Memory module enhanced for ControlLogix processors